3(4x+7)=3x+9

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Solution for 3(4x+7)=3x+9 equation:


Simplifying
3(4x + 7) = 3x + 9

Reorder the terms:
3(7 + 4x) = 3x + 9
(7 * 3 + 4x * 3) = 3x + 9
(21 + 12x) = 3x + 9

Reorder the terms:
21 + 12x = 9 + 3x

Solving
21 + 12x = 9 + 3x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-3x' to each side of the equation.
21 + 12x + -3x = 9 + 3x + -3x

Combine like terms: 12x + -3x = 9x
21 + 9x = 9 + 3x + -3x

Combine like terms: 3x + -3x = 0
21 + 9x = 9 + 0
21 + 9x = 9

Add '-21' to each side of the equation.
21 + -21 + 9x = 9 + -21

Combine like terms: 21 + -21 = 0
0 + 9x = 9 + -21
9x = 9 + -21

Combine like terms: 9 + -21 = -12
9x = -12

Divide each side by '9'.
x = -1.333333333

Simplifying
x = -1.333333333

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